[Guide] Lenovo Legion Y520/Y720 using Clover UEFI

[RehabMan]

Copied all kexts to /L/E and rebuilt kextcache. Unfortunately no change.

Do you have latest BIOS?
Note that Clover config.plist/ACPI/SSDT/Generate/PluginType=true is not working due to patterns found in your DSDT.
Look at the generated CPU0/PluginType SSDT (SSDT-11 in patchmatic output):

DefinitionBlock ("", "SSDT", 1, "PmRef", "_CPUPM", 0x00003000)
{
    External (_***._SB_.GZFD.CPU0, DeviceObj)    // Warning: Unknown object

    Scope (\_***._SB.GZFD.CPU0)
    {
        Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
        {
            If (LEqual (Arg2, Zero))
            {
                Return (Buffer (One)
                {
                     0x03                                           
                })
            }

            Return (Package (0x02)
            {
                "plugin-type",
                One
            })
        }
    }
}

Obviously not correct. It happens sometimes... Use SSDT-XCPM.aml instead (set Generate/PluginType=false).

Also:
- try different ig-platform-id values
- disable Nvidia
- try without -cdfon

 

[tuxtard]

Do you have latest BIOS?
Note that Clover config.plist/ACPI/SSDT/Generate/PluginType=true is not working due to patterns found in your DSDT.
Look at the generated CPU0/PluginType SSDT (SSDT-11 in patchmatic output):

DefinitionBlock ("", "SSDT", 1, "PmRef", "_CPUPM", 0x00003000)
{
    External (_***._SB_.GZFD.CPU0, DeviceObj)    // Warning: Unknown object

    Scope (\_***._SB.GZFD.CPU0)
    {
        Method (_DSM, 4, NotSerialized)  // _DSM: Device-Specific Method
        {
            If (LEqual (Arg2, Zero))
            {
                Return (Buffer (One)
                {
                     0x03                                          
                })
            }

            Return (Package (0x02)
            {
                "plugin-type",
                One
            })
        }
    }
}

Obviously not correct. It happens sometimes... Use SSDT-XCPM.aml instead (set Generate/PluginType=false).

Also:
- try different ig-platform-id values
- disable Nvidia
- try without -cdfon

Hi,

I tried disabling plugintype and using SSDT-XCPM, disabling nvidia, booting without cdfon but still getting black screen. I tested these ids without success - 0x59160000/0x59168086, 0x591b0000/0x59168086, 0x59120000/0x59128086, 0x19160000/0x19168086. Removed all clover patches that are related to LDVS, DP and HDMI, but it didn't help either. I am starting to think that the problem is somewhere in WhateverGreen, but not sure where to look.

 

[tuxtard]

Installed High Sierra and it works just fine with Lilu + WhateverGreen. It seems that I am hitting some Mojave specific problem.

 

[dalukas]

I'm facing the exact same problem as tuxard
Booting to blank screen, tried the tutorial config and your config for the intel HD 630 series.
Both resulting in a blank screen.

 

[tuxtard]

@the-braveknight You don't have these blank screen problems with your Y520 on Mojave? What's your exact Y520 model?

 

[RehabMan]

I'm facing the exact same problem as tuxard
Booting to blank screen, tried the tutorial config and your config for the intel HD 630 series.
Both resulting in a blank screen.

Same CPU PM problem mentioned in post #111.

 

[the-braveknight]

@the-braveknight You don't have these blank screen problems with your Y520 on Mojave? What's your exact Y520 model?

I don’t have any problems with my laptop. My machine is a Lenovo Legion Y520 15IKBM.

 

[tuxtard]

I don’t have any problems with my laptop. My machine is a Lenovo Legion Y520 15IKBM.

Hmm strange, we have the same model. What BIOS version are you at? I am at latest, 5XCN24WW. Are you on HFS or APFS?

 

[dalukas]

Same CPU PM problem mentioned in post #111.

And how would I do that exactly, also i'm able to boot without acceleration with -igfxvesa then everything is working fine except acceleration.

 

[the-braveknight]

Hmm strange, we have the same model. What BIOS version are you at? I am at latest, 5XCN24WW. Are you on HFS or APFS?

My BIOS version is 5XCN20WW and I’m on APFS.